Rust Preventative Products Evaluation ... Fluid Film Wins

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CVX20

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Hmm.
I think I'll stick with Krown.
 

Halligan

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I fluid filmed my truck for the first time this year. It's a 2015 and I've never done any undercoating until this year. My frame, suspension, and skid plated have has some surface rust but no rot. The underside of the body and bed seems ok at this point. I figured I would Fluid film it every year going forward to extend the life of the under carriage.

I sprayed the underside myself with a Kellsport spray gun I purchased specifically for this purpose. I bought the fluid film in a gallon container and used maybe a 1/2 gallon. Once I use up this gallon I may try a product called WoolWax which is very similar to Fluid Film but supposedly smells better, or less bad depending how you want to slice it. It's also a little thicker and may resist wash off better.
 

CVX20

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I fluid filmed my truck for the first time this year. It's a 2015 and I've never done any undercoating until this year. My frame, suspension, and skid plated have has some surface rust but no rot. The underside of the body and bed seems ok at this point. I figured I would Fluid film it every year going forward to extend the life of the under carriage.

I sprayed the underside myself with a Kellsport spray gun I purchased specifically for this purpose. I bought the fluid film in a gallon container and used maybe a 1/2 gallon. Once I use up this gallon I may try a product called WoolWax which is very similar to Fluid Film but supposedly smells better, or less bad depending how you want to slice it. It's also a little thicker and may resist wash off better.
What about the inside of your body panels.I worry more about holes in the sheet metal than under carriage damage.Krown applies product to pretty much all exposed metal and the inside of all the panels.
 

Halligan

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The Kellsport gun I purchased come with flexible wands you put on the spray gun to get inside the rocker panels and access to the inside of the boxed frame through holes in the frame. I used a regular aerosol can of fluid film with the red plastic straw to get inside the doors because the holes are so small on the doors. Fluid film has good creep properties and will continue to creep even after applied.

I'll tell you all now if you decide to do it yourself like I did wear safety glasses and a dust mask to avoid breathing in the over spray.
 

canadiankodiak700

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Hmm.
I think I'll stick with Krown.
Lol, I feel sorry for you. Inferior product, and the fact that they drill holes instead of using factory holes. They will drill right beside a factory plug, why? Pull the plug, spray inside, replace plug.... Why do and expose more steel. So stupid. I've had my last 2 vehicles undercoated with fluid film. I was surprised to see the detail that krown never did. Inside all body panels, up behind wheel well liners, firewall, battery terminals, inside frame and bumpers, every latch, underside of hood, even behind the insulation.

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chrisbh17

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Lol, I feel sorry for you. Inferior product, and the fact that they drill holes instead of using factory holes. They will drill right beside a factory plug, why? Pull the plug, spray inside, replace plug.... Why do and expose more steel. So stupid. I've had my last 2 vehicles undercoated with fluid film. I was surprised to see the detail that krown never did. Inside all body panels, up behind wheel well liners, firewall, battery terminals, inside frame and bumpers, every latch, underside of hood, even behind the insulation.

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Did projectfarm test Krown, NH Oil Undercoating or Corrosion Free RustCure?

Im pretty sure they would be found to be superior products, vs fluid film. Ive used both and far prefer Corrosion Free.

No "wet sheep" smell, no need to stir it into oblivion to keep it liquid, does not drip. A little more expensive but I still prefer it.

Canadian government actually tested a bunch of corrosion protection products to choose a standard for all of their vehicles. CF won. I know they tested Krown as well, not sure what others.
 

canadiankodiak700

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Yes he's tested Krown and nhoil, I know for sure and neither did very well. Nhoil fairs not much better than motor oil.
Canadian government didn't use fluid film because there hadn't been a dedicated fluid film undercoating company. That's changing now, they are popping up everywhere. We have a great one here in Sudbury Ontario, he's some my fluidfilm undercoating.

You only get angel from fluidfilm while spraying it, can't notice it in the vehicle or near it. It didn't drip, which I can't say about Krown, that dripped all over our shop floor every night for about a week.



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Halligan

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I will attest that fluid film once applied does not drip on ground. Yes it smell's like Bigfoot's grundle while being applied and you smell it for the first couple of drives as it burns off the exhaust and engine. other than that no long term smell.
 

js12278

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What about the inside of your body panels.I worry more about holes in the sheet metal than under carriage damage.Krown applies product to pretty much all exposed metal and the inside of all the panels.
Kellsport has nozzles and tubes available to reach anywhere on the body of the truck.
I did my truck last week. I used the Woolwax brand, similar to Fluid Film, and covered the entire undercarriage and "interior" panels that you're concerned with.
Our trucks have numerous access holes for the rocker panels and frame rails. I used a 360° spray nozzle to get inside these areas.
I used black on the frame and anything visible. I used the straw color, basically clear, on anything "interior". I used aerosol cans to get inside all the doors and pillar posts.
I've used these products on my card and lawn equipment for years. It's fantastic stuff.
First, initial, application might use a full gallon too cover all areas. I keep a gallon of straw on hand for any metal protection I need to do around the house and for touch ups on truck.
Initial cost, $185. Each year, $49/gallon

I do recommend waiting a week after spraying before using any sort of undercarriage wash.
Other product I might use is Cosmoline RP-342.

Just my $.02



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Travelin Ram

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I’ve been a believer in FF since seeing what it did for marine engines and hardware in salt water environments.

Two years ago we bought a new motor home that unfortunately had been driven from the factory through road salt, then parked in the Florida heat without rinsing that crap off. It was sickening to see all the surface rust underneath it. I cleaned it up and hit it with FF. Two years later and it stopped the rust in it’s tracks.
 

CVX20

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Not all Krown dealers are created equal.I switched because of a new owner at my original spot.Been using Krown for years and I'll definitely stick with it.No issues so far so why change.

Opinions are like assholes,everyone has one and usually mostly only matter to the one spewing the info.
 

CVX20

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Lol, I feel sorry for you. Inferior product, and the fact that they drill holes instead of using factory holes. They will drill right beside a factory plug, why? Pull the plug, spray inside, replace plug.... Why do and expose more steel. So stupid. I've had my last 2 vehicles undercoated with fluid film. I was surprised to see the detail that krown never did. Inside all body panels, up behind wheel well liners, firewall, battery terminals, inside frame and bumpers, every latch, underside of hood, even behind the insulation.

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Not even close to my experience with Krown.
 

chrisbh17

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Yes he's tested Krown and nhoil, I know for sure and neither did very well. Nhoil fairs not much better than motor oil.
Canadian government didn't use fluid film because there hadn't been a dedicated fluid film undercoating company. That's changing now, they are popping up everywhere. We have a great one here in Sudbury Ontario, he's some my fluidfilm undercoating.

You only get angel from fluidfilm while spraying it, can't notice it in the vehicle or near it. It didn't drip, which I can't say about Krown, that dripped all over our shop floor every night for about a week.



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Does he have a video with the Krown and NHOil tests?
 

PoMansRam

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There's a lot of threads on this, but it's more about the application than the product.

I had my 2017 Ram treated by a local Krown dealer in the fall of 2018. I wasn't thrilled with the application. The shop had a steady stream of vehicles being Krowned and I believe they really skimped on my truck for the ~$160 it cost. They did drill one hole in each of the 4 door jambs. That was the only drilling they did. Product did drip from the truck for a few days, but after a month or so, I couldn't see much evidence that the truck was treated at all, but that doesn't mean it's not in the nooks and crannies working it's magic.

In the spring of 2019 my brother treated his 2019 Ram 1500 classic himself with a Woolwax 5gal kit he bought. He was so thrilled with it he insisted I use it on my truck. I did. it's obviously a thicker product than Krown or FF. It doesn't drip at all and you can see it hanging around for a long time.

On my other vehicles I too purchased the kellsport spray gun and a 1gal FF kit. Love that stuff too. I find it just a tad thinner than Woolwax. I made a grab-n-go kit with the spray gun, quart jars and wands in a clean 5gal pail with lid. I can grab and spot shoot anything, anytime I need it now. Love it.

The major difference between FF and Woolwax to me is Woolwax smells really nice, like a hand lotion. FF smells like a barnyard. Yes, I know "It's lanoline based", so I'm sure that has something to do with the sheep smell and I'm sure batches vary.
 

Hemi395

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I left a comment on the video asking him to compare FF to Woolwax. He says he reads every comment so hopefully he'll make a future video about it...
 

Elkman

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If salt from the roads is a problem then the best solution is frequent trips to the self serve car wash to clean the underside of the truck. Opting for wheel well liners that are now an extra is also a good idea.

Best rust prevention is a couple coats of clear lacquer paint. When I get a ding or stratch in the exterior paint on a vehicle I put some clear fingernail polish on it to keep the metal from oxidizing.
 

CVX20

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If salt from the roads is a problem then the best solution is frequent trips to the self serve car wash to clean the underside of the truck. Opting for wheel well liners that are now an extra is also a good idea.

Best rust prevention is a couple coats of clear lacquer paint. When I get a ding or stratch in the exterior paint on a vehicle I put some clear fingernail polish on it to keep the metal from oxidizing.
You can't get to most of the rust points by washing under a vehicle.That's where these products make the difference.It covers the inside of the sheet metal.
 

Halligan

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I think for most of us a single application per season of Fluid Film will be good enough. If you live where it snows constantly and the DOT salts heavily maybe 2 applications per year is best. Fwiw, I think the real benefit is getting it inside the doors, rocker panels and boxed frame sections that will prevent the rusting from the inside out scenario.
 
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